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CHA_FAN2 said N/A?

G

griever257

Junior Member
Hi all, I am new to the computer world 🙂
I've just finished putting my first build together, everything works very well, but there's a slight problem. I bought an aftermarket chassis fan (scythe something) and it has a 3 pin header, which i plugged that into the Asus m5a97 evo motherboard's CHA_FAN2 head. FOr some reason, in bios, the device is not recognized, i.e it said CHA_FAN2 N/A. I have enabled Q-fan and whatever else that was in the bios, I just couldn't get this CHA_FAN2 to work.... 🙁

Now if i plug the fan to the power supply, it works fine, the problem is it spins at max speed (like a turbo of a car that sexy whoosh sound) and thus very very loud.

THank you all!
 
griever257 said:
Hi all, I am new to the computer world 🙂
I've just finished putting my first build together, everything works very well, but there's a slight problem. I bought an aftermarket chassis fan (scythe something) and it has a 3 pin header, which i plugged that into the Asus m5a97 evo motherboard's CHA_FAN2 head. FOr some reason, in bios, the device is not recognized, i.e it said CHA_FAN2 N/A. I have enabled Q-fan and whatever else that was in the bios, I just couldn't get this CHA_FAN2 to work.... 🙁

Now if i plug the fan to the power supply, it works fine, the problem is it spins at max speed (like a turbo of a car that sexy whoosh sound) and thus very very loud.

THank you all!
Click to expand...

Does it spin when plugged into the fan2 header or just not monitor the rpms? Could be a defective fan. The yellow wire does the rpm monitoring so take a peek at that to make sure
its making good contact.
 
SpeedTester said:
Does it spin when plugged into the fan2 header or just not monitor the rpms? Could be a defective fan. The yellow wire does the rpm monitoring so take a peek at that to make sure
its making good contact.
Click to expand...

Hey friend, so after closer inspection, I realized that on the 3 pin connector (designed for the mobo) only has a yellow wire to it, meaning out of the 3 holes, one was yellow basically for monitoring rpm. the other two holes have no pins. BUT the fan has a power supply molex connector on the side.

So i guess i'll switch my question to, can i plug the 3-pin connector to the mobo WHILE plugging the PSU molex to the PSU for power? Since the layout of the fan is like this... but i don't wanna fry my mobo lol.

so in short.

1. the 3 pin to mobo has a yellow wire only (hence the 3 hole only has 1 hole, which is connected to the yellow wire)
2. the fan also has molex male and female 4 pin connector, for the PSU.

hm. can i plug both to PSU and mobo?
 
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